public static ESplitType GetSplitResult(SplitPlane plane, TriRef tri)
{
var planeDir = plane.dir;
var valA = LVector2.Cross(planeDir, tri.a - plane.a);
var valB = LVector2.Cross(planeDir, tri.b - plane.a);
var valC = LVector2.Cross(planeDir, tri.c - plane.a);
var isRight = false;
if (valA != 0)
{
isRight = valA < 0;
}
if (valB != 0)
{
isRight = valB < 0;
}
if (valC != 0)
{
isRight = valC < 0;
}
var isA = valA <= 0;
var isB = valB <= 0;
var isC = valC <= 0;
if (isA == isB && isB == isC)
{
return(isRight ? ESplitType.Right : ESplitType.Left);
}
isA = valA >= 0;
isB = valB >= 0;
isC = valC >= 0;
if (isA == isB && isB == isC)
{
return(isRight ? ESplitType.Right : ESplitType.Left);
}
return(ESplitType.OnPlane);
}
